1. I notice that on both iOS Sudoku and Web Skyscrapers, when a number is entered, all pencil marks for that number in the row and column (and region, in sudoku) disappear. This is such a handy feature. Would you consider adding it to Web Sudoku?

2. In Sum Sudoku on the Web, if you left-click on a pencil mark without selecting it, the pencil marks for the next highest number (instead of the number selected) are highlighted. This seems to be a bug, as it makes no sense and is not present in other sudoku variants. It's very inconvenient Can this be fixed?